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I'm assuming this isn't an option for you - but Drupal 1.5 is quite old, and most of these issues are easily addressed by core functionality (and if not then by contrib modules) in Drupal 6 (7 is still a bit bleeding edge).

Another popular solution to investigate would be Drupal CMS running Ubercart

As long as your blog content is available via RSS feed, you can use the method described below to have Facebook auto-magically import your content.

http://www.facebook.com/notes/penny-butler/how-to-import-rss-feed-into-facebook-fan-page/10150170331180626

As long as your blog content is available via RSS feed, you can use the method described below to have Facebook auto-magically import your content.

http://www.facebook.com/notes/penny-butler/how-to-import-rss-feed-into-facebook-fan-page/10150170331180626